Types of Cluster Headaches - Topic Overview

Episodic cluster headaches are the most common
type of cluster headaches. People with episodic cluster headaches have cluster
periods of 1 to 3 months when they are prone to having headaches. The cluster
periods are followed by headache-free periods (remissions) of 6 months or more.
About 90 out of 100 people who have cluster headaches have episodic cluster
headaches.1

Chronic cluster headaches are
those that occur during a period of at least 12 months without a headache-free
period (remission) or when remissions last less than one month.2 About 10 out of 100 people who have cluster headaches have chronic
cluster headaches.1

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This information is produced and provided by the National
Cancer
Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National
Cancer
Institute via the Internet web site at http://
cancer
.gov or call 1-800-4-CANCER.

WebMD Medical Reference from Healthwise

Last Updated:
March 12, 2014

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